Tim Cook:

When I arrive in my office each morning, I’m greeted by framed photos of Dr. King and Robert F. Kennedy. I don’t pretend that writing this puts me in their league. All it does is allow me to look at those pictures and know that I’m doing my part, however small, to help others. We pave the sunlit path toward justice together, brick by brick. This is my brick.

Many hours of incessant practice must be spent to acquire the requisite amount of skill; but it must be remembered if feats at card-handling could be attained for the asking there would be little in such performance to interest or profit anyone.

Don’t think this only applies to cards.